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What is the standard thread size on mac 10

What is the standard thread on a mac 10 9mm? I'm looking at getting a suppressor - need to know what the standard barrel thread as I would like to have a can that screws right on - no attachments needed.

Personally, I'd go with a can that features interchangeable mounts like the Bowers CAC-9 or the Coastal MIMS. Get a 1/2 x28 tpi threaded endcap and have the tip of your existing MAC-10 9mm barrel threaded for this pitch. You can buy the coarse 3/4x10 pitch mount and buy a different size at a later date with either of these systems.

Hopefully Garrett will post a photo of his set up. I think it's the best way to go due to the coarse MAC thread pattern which will allow the can to easily unscrew risking a baffle strike.

Get a 1/2 x28 tpi threaded endcap and have the tip of your existing MAC-10 9mm barrel threaded for this pitch. You can buy the coarse 3/4x10 pitch mount and buy a different size at a later date with either of these systems.

Hopefully Garrett will post a photo of his set up. I think it's the best way to go due to the coarse MAC thread pattern which will allow the can to easily unscrew risking a baffle strike.

Here ya go. This is a factory barrel on a standard upper next to an un-mounted barrel with the double-threads. As Vegas notes, this barrel gives the option of using a can with either style of threads.

I had mine done by a company that is now out of business. This would be what USMG would do for you if you wanted.

I know this is an old thread (no pun intended) but has anybody tried putting a nitrile washer on the barrel and snugging the suppressor down against it to keep it from unscrewing if the coarse barrel threads are used? I can't imagine it would kant the suppressor enough to cause a strike. I am looking at the Vers9S to be put on the stock (3/4-10) barrel of a 10/9 and don't want to thread the tip if at all possible.

Originally Posted by Garrett

3/4-10 for the MAC10/9 or M11/9
7/8-9 for the MAC10/45.

If you get one of these, you will need to have some way to hold the can on securely. It will loosen when you shoot, and it will be out of alignment and you will get baffle strikes.

Use a cover so you can physically hold the can on tight with your off hand.

I know this is an old thread (no pun intended) but has anybody tried putting a nitrile washer on the barrel and snugging the suppressor down against it to keep it from unscrewing if the coarse barrel threads are used? I can't imagine it would kant the suppressor enough to cause a strike. I am looking at the Vers9S to be put on the stock (3/4-10) barrel of a 10/9 and don't want to thread the tip if at all possible.

As Garrett stated, make certain the can doesn't get loose.

I'm running a Sionics can on an M10/45 and I've found that a generous few wraps of Teflon tape really helps.

I'm a lefty so I hold the can with my right hand using the nomex cover. My right hand keeps natural tension on the can in a tightening fashion to the point that the can can be hard to get off once it cools.